Nguyen, Hoang; Kinnunen, Päivö; Carvelli, Valter; Illikainen, Mirja (2019) Strain-Hardening Ettringite-based Composite with Polypropylene Fiber Reinforced Ladle Slag: Durability under Combined Chloride and Sulfate Attack. In : Serdar, Marijana; Štirmer, Nina; Provis, John (eds.) Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) : New Generation of Construction Materials, Proceedings pro128-1 (pp. 234-240), Paris; Rilem Publications.
Strain-hardening ettringite-based composite with polypropylene fiber reinforced ladle slag : durability under combined chloride and sulfate attack
|Author:||Nguyen, Hoang1; Kinnunen, Päivö1; Carvelli, Valter2;|
1Fibre and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran katu 1, 90014 Oulu, Finland
2Department A.B.C., Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milan, Italy
|Online Access:||PDF Full Text (PDF, 0.2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020111390279
|Publish Date:|| 2020-11-13
Ladle slag, an industrial waste from steel manufacturing processes, is an interesting raw material for sustainable inorganic binders. In earlier work, we have developed an ettringite-based binder (LSG) from the hydration between ladle slag and gypsum. In addition, polypropylene (PP) fiber was employed to attain a strain-hardening cementitious composite from LSG. To investigate the durability of PP fiber reinforced LSG, the composite was exposed to a combined chloride and sulfate environment under freeze-thaw cycling. The compressive and flexural behavior of PP fiber reinforced LSG after up to 180 freeze-thaw cycles was experimentally characterized. The experimental results confirm the durability of LSG under Na₂SO₄-NaCl environment. Furthermore, the PP fibers generally enhance the mechanical properties and durability of the reinforced composite. Since there is a lack of study on the durability of ettringite-based binders from industrial wastes under harsh environments, this experimental study reveals the feasibility of using fiber reinforced ettringite-based composite as an alternative construction material.
|Pages:||234 - 240|
Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) : New Generation of Construction Materials
|Host publication editor:||
International Conference on Sustainable Materials, Systems and Structures
|Type of Publication:||
A3 Book chapter
|Field of Science:||
212 Civil and construction engineering
This work was done under MINSI project (grant number: A70189). The authors appreciate support from SSAB Europe Oy (Finland), Brasilit Saint-Gobain (Brazil), BASF (Germany), and Vanderbilt (USA) for providing the ladle slag, PP fiber, superplasticizer, and dispersing agent, respectively. Hoang Nguyen gratefully acknowledges the financial support from Tauno Tönning Foundation.
© 2019 RILEM.